crob09
If you are just doing straight lines, then just change the Y or the X depends which axes you want to offset, by the amount you want to offset, like if the Y is Y0.0 then move it the dia of the cutter, say the cutter is .125 move the Y-.125 X4.0,
You can of cause use cutter comp with a G41 for cutter comp left & G42 for cutter comp right a G40 to cancel cutter comp